dan simon, cnn, santa rosa, california. >>> as dan points out when a child is killed by anybody, let alone a police officer, it raises questions. we have to also do careful analysis. let's do that right now. we're going to bring in harry hx alk. he understands these situations, lived through one yourself. >> yes, i did. >> let's go through the punch points of this. the first one, this all happened in ten seconds. to the uninitiated it sounds like why didn't officer wait? why couldn't it be a more deliberate process? tell me about the thinking that happens. >> first let me say i think this is a terrible tragedy. it's terrible when something like this happens. any police officer might have to deal with this situation at any time. all right? what's going through a police officer at the time when he sees somebody with a weapon is not only his own safety but the safety of the people around him. that officer might have saw this kid with this weapon which of course looks exactly like an ak-47. all right? he's got -- he's former military, he has 27 years experience. he knows what this weapon